//单个导入
var ajs = require("./a.js");
console.log(ajs)

console.log(ajs.obj.name)
ajs.add(8, 9)

// 引入c.js 
var cjs = require("./c");
console.log(cjs)
cjs.sleep();
// 引入d.js 

var djs = require("./d");
djs("如果我是dj", "你会爱我吗", "不会")